package com.yimixian.app.ui;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.RectF;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.RelativeLayout;

import com.ymx.sdk.util.DensityUtils;
import com.ymx.sdk.util.DeviceUtils;

/**
 * Created by zhilian-2 on 2016/3/1.
 */
public class XCRoundRectImageView extends ImageView{

    private Paint paint;

    private int margin = 50;//单位dp

    private int insideMargin = 3;//单位dp

    public XCRoundRectImageView(Context context) {
        this(context,null);
    }

    public XCRoundRectImageView(Context context, AttributeSet attrs) {
        this(context, attrs,0);
    }

    public XCRoundRectImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        paint  = new Paint();
    }

    /**
     * 绘制圆角矩形图片
     * @author caizhiming
     */
    @Override
    protected void onDraw(Canvas canvas) {

        Drawable drawable = getDrawable();
        if (null != drawable) {
            Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();
            Bitmap b = getRoundBitmap(bitmap, 20);
            final Rect rectSrc = new Rect(0, 0, b.getWidth(), b.getHeight());
            final Rect rectDest = new Rect(0,0,getWidth(),getHeight());
            paint.reset();
            paint.setAntiAlias(true);
            canvas.drawBitmap(b, rectSrc, rectDest, paint);

        } else {
            super.onDraw(canvas);
        }
    }

    /**
     * 获取圆角矩形图片方法
     * @param bitmap
     * @param roundPx,一般设置成14
     * @return Bitmap
     * @author caizhiming
     */
    private Bitmap getRoundBitmap(Bitmap bitmap, int roundPx) {
        Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
                bitmap.getHeight(), Bitmap.Config.ARGB_4444);
        Canvas canvas = new Canvas(output);

        final int color = 0xff424242;

        final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
        final RectF rectF = new RectF(rect);
        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        int x = bitmap.getWidth();
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, rect, rect, paint);
        return output;
    }

    public void setLayoutParams(View view, float scale){
        int width;
        int height;
        int screenWidht = DeviceUtils.getScreenWidth(getContext());
        int screenHeight = DeviceUtils.getScreenHeight(getContext());
        float screenScale = (float)screenWidht / screenHeight;
        if (screenScale < scale){
            width = screenWidht - 2 * DensityUtils.dp2px(getContext(), margin);
            height = (int)(width / scale);
        }else{
            height = screenHeight - 2 * DensityUtils.dp2px(getContext(), margin);
            width = (int)(height * scale);
        }
        int insideMarginPx = DensityUtils.dp2px(getContext(), insideMargin);
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
                width - insideMarginPx, height - insideMarginPx);
        params.setMargins(insideMarginPx, insideMarginPx , insideMarginPx, insideMarginPx);
        FrameLayout.LayoutParams frameLayout = new FrameLayout.LayoutParams(width, height);
        frameLayout.gravity = Gravity.CENTER;
        view.setLayoutParams(frameLayout);
        params.addRule(RelativeLayout.CENTER_IN_PARENT);//addRule参数对应RelativeLayout XML布局的属性
        this.setLayoutParams(params);
    }
}